Low-dropout linear regulator circuit A tape ramp starting

The present invention provides a low-dropout linear regulator with a ramp starting circuit, the starting circuit comprises a voltage regulator (201) and the primary regulator circuit (202); wherein the starting circuit (201), on the one hand for generating two Road ramp EN_B and the enable signal EN, a voltage regulator circuit causes the input signal of the main terminal, the other as an output voltage Vro input signal of the main regulator circuit, the voltage Vro ramp signal rises, eventually stabilize at a voltage; master regulator circuit (202), the two control enable signal EN and EN_b lower, for the signal voltage Vro be scaled, a stable output voltage Vo. Low-dropout linear regulator of the present invention, when powering on can effectively prevent the inrush current, and the current consumed is very low.